Usb Port Connectors; Parallel Port Connector: Lpt1 - VIA Technologies P4MA PRO User Manual

USB Port Connectors

The VIA P4MA PRO mainboard provides 2 USB 2.0 ports (plus 1 pin-headers
for up to 2 additional USB 2.0 connections; see 2-17). USB-compatible devices
can be plugged directly into these ports.
5 6 7 8
1 2 3 4
USB Ports

Parallel Port Connector: LPT1

The mainboard provides a 25-pin female connector for LPT (parallel port). A
parallel port is a standard printer port that supports Enhanced Parallel Port
(EPP) and Extended Capabilities Parallel Port (ECP) modes.
13
25
Pin Definition
PIN SIGNAL
1 VCC
2 -Data 0
3 +Data 0
4 GND
5. VCC
6. -Data 1
7. +Data 1
8. GND
PIN SIGNAL
1
1 STROBE
2 DATA0
3 DATA1
4 DATA2
5 DATA3
6 DATA4
7 DATA5
14
8 DATA6
9 DATA7
10 ACK#
1 1 BUSY
12 PE
13 SELECT
14 AUTO FEED#
15 ERR#
16 INIT#
17 SLIN#
18 GND
19 GND
20 GND
21 GND
22 GND
23 GND
24 GND
25 GND
2-9
Installation
DESCRIPTION
+5V
Negative Data Channel 0
Positive Data Channel 0
Ground
+5V
Negative Data Channel 1
Positive Data Channel 1
Ground
Pin Definition
DESCRIPTION
Strobe
Data0
Data1
Data2
Data3
Data4
Data5
Data6
Data7
Acknowledge
Busy
Paper End
Select
Automatic Feed
Error
Initialize Printer
Select In
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground